6443738 has 8 divisors (see below), whose sum is σ = 11046432. Its totient is φ = 2761596.

The previous prime is 6443737. The next prime is 6443743. The reversal of 6443738 is 8373446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6443698 and 6443707.

It is not an unprimeable number, because it can be changed into a prime (6443737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230120 + ... + 230147.

It is an arithmetic number, because the mean of its divisors is an integer number (1380804).

Almost surely, 2^6443738 is an apocalyptic number.

6443738 is a deficient number, since it is larger than the sum of its proper divisors (4602694).

6443738 is a wasteful number, since it uses less digits than its factorization.

6443738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460276.

The product of its digits is 48384, while the sum is 35.

The square root of 6443738 is about 2538.4518904246. The cubic root of 6443738 is about 186.0855389499.

The spelling of 6443738 in words is "six million, four hundred forty-three thousand, seven hundred thirty-eight".